CVE-2025-7207

mruby nregs codegen.c scope_new heap-based overflow

Published Jul 9, 2025 CVSS 4.0 · 4.8 Medium EPSS < 1% KEV · Not listed
Description
A vulnerability, which was classified as problematic, was found in mruby up to 3.4.0-rc2. Affected is the function scope_new of the file mrbgems/mruby-compiler/core/codegen.c of the component nregs Handler. The manipulation leads to heap-based buffer overflow. An attack has to be approached locally. The exploit has been disclosed to the public and may be used. The name of the patch is 1fdd96104180cc0fb5d3cb086b05ab6458911bb9. It is recommended to apply a patch to fix this issue.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-20759 A vulnerability, which was classified as problematic, was found in mruby up to 3.4.0-rc2. Affected is the function scope_new of the file mrbgems/mruby-compiler/core/codegen.c of the component nregs Handler. The manipulation leads to heap-based buffer overflow. An attack has to be approached locally. The exploit has been disclosed to the public and may be used. The name of the patch is 1fdd96104180cc0fb5d3cb086b05ab6458911bb9. It is recommended to apply a patch to fix this issue.
History
Type Values Removed Values Added
Weaknesses CWE-787
CPEs cpe:2.3:a:mruby:mruby:*:*:*:*:*:ruby:*:*
cpe:2.3:a:mruby:mruby:3.4.0:rc2:*:*:*:ruby:*:*
cpe:2.3:a:mruby:mruby:3.4.0:rc:*:*:*:ruby:*:*
Type Values Removed Values Added
Metrics epss

{'score': 0.00013}

epss

{'score': 0.00014}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description A vulnerability, which was classified as problematic, was found in mruby up to 3.4.0-rc2. Affected is the function scope_new of the file mrbgems/mruby-compiler/core/codegen.c of the component nregs Handler. The manipulation leads to heap-based buffer overflow. An attack has to be approached locally. The exploit has been disclosed to the public and may be used. The name of the patch is 1fdd96104180cc0fb5d3cb086b05ab6458911bb9. It is recommended to apply a patch to fix this issue.
Title mruby nregs codegen.c scope_new heap-based overflow
Weaknesses CWE-119
CWE-122
References
Metrics cvssV2_0

{'score': 1.7, 'vector': 'AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C'}

cvssV3_0

{'score': 3.3, 'vector': 'CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C'}

cvssV3_1

{'score': 3.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C'}

cvssV4_0

{'score': 4.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulDB
Published
Updated
Jul 9, 2025, 1:08 PM
Reserved
Jul 7, 2025, 12:21 PM
Status
Analyzed
Published
Jul 9, 2025, 1:15 AM
Modified
Jun 17, 2026, 10:04 AM
Severity
Low
Public date
Jul 9, 2025, 12:02 AM